Home / 3,422.25-5,131.33-1,663.80

Finding the Fourth Proportional to 3,422.25, 5,131.33 and 1,663.80

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Solution

The fourth proportional to 3,422.25, 5,131.33 and 1,663.80 is: 2,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.25 : 5,131.33 = 1,663.80 : x
  2. Step 2: Convert to fraction form
    3,422.25/5,131.33 = 1,663.80/x
  3. Step 3: Cross multiply
    3,422.25x = 5,131.33 × 1,663.80
  4. Step 4: Simplify right side
    3,422.25x = 8,537,506.85
  5. Step 5: Solve for x
    x = 8,537,506.85/3,422.25
  6. Step 6: Final answer
    x = 2,494.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.